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Electrum

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Accountability record

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Informational 19 AI analysisMessage 96 · Strong
EL ElectrumElectrum BitcoinSoftware wallets

wallet: sign_message: strip whitespaces in GUIs, do not strip in CLI

This commit tidies up how Electrum handles extra spaces around Bitcoin addresses, messages, and signatures when signing or verifying messages. Previously, different parts of the program (desktop GUI, mobile-style GUI, command line) behaved…

Behavior normalization across GUI and CLI interfacesNo cryptographic primitive changedNo privilege boundary crossed
4c3064f5by SomberNight+27−185 files
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Informational 19 AI analysisMessage 96 · Strong
EL ElectrumElectrum BitcoinSoftware wallets

qml: strip whitespace from message before signing, as in qt gui

This commit fixes a minor consistency bug in Electrum's newer QML (mobile-style) user interface. When signing a message, the app now removes accidental spaces at the start or end of the message and address, just like the older desktop Qt i…

Behavioral inconsistency between GUI implementations could cause user confusion or failed verificationNo cryptographic weakness introduced; change is input normalizationNo memory-unsafe code, no privilege changes, no network changes
72507328by Ferdinando Ametrano+3−01 file
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Low 25 AI analysisMessage 68 · Adequate
EL ElectrumElectrum BitcoinSoftware wallets

trezor: drop session after closing it

This commit fixes a bug in Electrum's support for Trezor hardware wallets. After a Trezor session times out or is closed, Electrum now forgets the old session ID. Previously it kept the stale session ID, so the next attempt to sign a trans…

Fixes a stale-session reference that caused InvalidSessionError on re-authenticationEnsures PIN re-prompt after session timeout/closureFailure mode was denial-of-service (transaction signing crash), not unauthorized signing
071b1e24by f321x+8−51 file
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Informational 18 AI analysisMessage 58 · Thin
EL ElectrumElectrum BitcoinSoftware wallets

qml: update ConfirmTxDialog onValidChanged

This is a small user-interface fix for the Electrum mobile/QML app. When sweeping private keys, the confirmation dialog that shows how much money will be moved initially displayed an amount of 0 because it did not refresh after the transac…

bd776e24by f321x+3−01 file
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Low 42 AI analysisMessage 85 · Strong
EL ElectrumElectrum BitcoinSoftware wallets

wallet.check_sighash: don't assume tx.add_info_from_wallet alrdy ran

This commit fixes a defensive check in the Electrum Bitcoin wallet. Before signing a transaction, Electrum checks whether the transaction uses unusual 'sighash' flags that could allow someone else to move coins unexpectedly. The bug was th…

Sighash sanity check could be bypassed for beyond-gap-limit wallet inputsFix adds defensive deep-copy and wallet-info population inside check_sighashRegression test demonstrates dangerous sighash is now caught even with gap_limit=2
b57327fbby SomberNight+48−02 files
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Informational 15 AI analysisMessage 73 · Adequate
EL ElectrumElectrum BitcoinSoftware wallets

hw_wallet/qt: reuse device message dialog across button requests

This commit is a user-interface performance and polish fix for Electrum's hardware wallet integration. It stops the app from destroying and recreating the same on-screen prompt every time a hardware wallet asks the user to confirm a transa…

898a4c27by Sasha Zykov+15−11 file
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Low 25 AI analysisMessage 88 · Strong
EL ElectrumElectrum BitcoinSoftware wallets

lnmsg: add new primitive type `bip340sig`, add tlv merkle root calculation and schnorr-sign over tlvs, implicit en/decode utf8 fields, schnorr signature verification.

This commit adds new Lightning Network message handling code to Electrum. It introduces a new BIP-340 Schnorr signature field type, computes Merkle roots over TLV (type-length-value) records, signs and verifies those roots, and adds implic…

New cryptographic signing/verification path addedNew BIP-340 tagged-hash Merkle root constructionSignature TLVs excluded from the Merkle root they sign
759ef10dby Sander van Grieken+160−111 file
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Moderate 55 AI analysisMessage 68 · Adequate
EL ElectrumElectrum BitcoinSoftware wallets

lnpeer: on_ping: drain out-socket buffer

This change fixes a potential denial-of-service weakness in Electrum's Lightning network peer handling. Previously, when Electrum replied to a peer's 'ping' message, it would add the reply to the outgoing socket buffer without waiting to c…

memory exhaustion / DoS mitigationunbounded outbound buffer growth preventedbackpressure added to peer ping/pong handling
9b206576by SomberNight+6−12 files
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Informational 20 AI analysisMessage 100 · Strong
EL ElectrumElectrum BitcoinSoftware wallets

ci: security review: give more permissions to claude

This commit changes Electrum's automated CI security-review bot so that the Claude AI assistant is allowed to run shell commands and modify files on its own, rather than only answering questions. The change is intentional and runs inside a…

New command-line flag named `--dangerously-skip-permissions` introducedCI script now permits an AI agent to execute commands and modify files without interactive permission checksExecution context changed from root to unprivileged `node` user to satisfy Claude's refusal to run as root
39cdb23eby f321x+4−12 files
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Informational 15 AI analysisMessage 90 · Strong
EL ElectrumElectrum BitcoinSoftware wallets

tests: regtest: make test_just_in_time less flaky

This commit only changes a test script. It adds a wait helper so a test that opens two Lightning channels in a row does not fail randomly on continuous integration. There is no change to Electrum's actual wallet or Lightning code, so users…

12547f94by f321x+23−01 file
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Informational 15 AI analysisMessage 45 · Thin
EL ElectrumElectrum BitcoinSoftware wallets

qml: styling updates qt6.10

This commit is a routine user-interface refresh for Electrum's mobile/desktop QML app, adjusting colors, spacing, button containers, and placeholder text to match newer Qt 6.10 styling. There is no security-relevant change and no indicatio…

cdb5c0b8by Sander van Grieken+209−17540 files
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Low 25 AI analysisMessage 73 · Adequate
EL ElectrumElectrum BitcoinSoftware wallets

qml: add workarounds for issue assigning custom types to QObject properties

This commit changes how the Electrum mobile/desktop QML GUI passes custom data objects between Python and the user interface. It switches many typed properties to the generic QVariant/'var' type and adds runtime type checks (asserts) in Py…

Type system relaxation: custom typed QML/Python properties changed to generic QVariant/varRuntime type enforcement added via assert statements in Python settersNo explicit security framing in commit message or diff
9772a6d5by Sander van Grieken+86−5924 files
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Informational 15 AI analysisMessage 35 · Opaque
EL ElectrumElectrum BitcoinSoftware wallets

qml: additional styling updates

This commit is purely a user-interface styling refresh for Electrum's QML (mobile/desktop) GUI. It swaps some visual components (highlight panes, button containers, padding, colors) and introduces a new shared 'DialogHighlightPane' control…

28f744f7by Sander van Grieken+136−8525 files
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Moderate 62 AI analysisMessage 93 · Strong
EL ElectrumElectrum BitcoinSoftware wallets

verifier.py: fix CVE-2012-2459: reject left-sibling duplicates

This commit fixes a known Bitcoin weakness (CVE-2012-2459) in Electrum's light-client verification. Because Bitcoin's Merkle tree duplicates the last hash when a level has an odd number of items, an attacker can craft a block proof that ma…

Fixes CVE-2012-2459 (Merkle tree duplicate-node weakness)Adds explicit LeftSiblingDuplicate exceptionStrengthens SPV Merkle proof verification
3d390742by SomberNight+106−262 files
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Moderate 65 AI analysisMessage 50 · Thin
EL ElectrumElectrum BitcoinSoftware wallets

daemon: set restrictive permission on RPC-server unix domain socket

Electrum's background daemon runs a local control server using a Unix domain socket. Previously, that socket file was created with permissions 0775, meaning any user in the same group could connect to it and potentially control the wallet.…

permission tightening on local RPC socketacknowledged race condition between socket creation and chmodlocal privilege boundary issue (group-writable socket)
9d204abfby SomberNight+8−11 file
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Moderate 62 AI analysisMessage 78 · Adequate
EL ElectrumElectrum BitcoinSoftware wallets

in GUI mode, only start a limited minimal RPC server

This commit reduces the attack surface of Electrum's built-in remote-control server when running in normal GUI mode. Previously, the RPC server exposed many wallet-related commands; now, in GUI mode on mainnet, it only exposes two safe com…

Reduction of RPC attack surface in GUI modeUnencrypted localhost RPC with config-stored passwordWindows localhost TCP exposure of RPC server
d951a3d2by SomberNight+22−102 files
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Low 37 AI analysisMessage 97 · Strong
EL ElectrumElectrum BitcoinSoftware wallets

fix: remove negative fee assert from get_tx_fee_warning

This commit removes a hard crash (assertion) in Electrum's wallet code when a user loads a partially-signed Bitcoin transaction (PSBT) whose calculated fee is negative. Instead of crashing, Electrum now logs a warning and continues. A nega…

assertion replaced with warning lognegative transaction fee handlingPSBT loading robustness
06490657by f321x+2−11 file
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Moderate 63 AI analysisMessage 86 · Strong
EL ElectrumElectrum BitcoinSoftware wallets

daemon: forbid "setconfig" command to change rpcserver settings in-flight

This commit fixes a security issue in Electrum's background daemon (the program that stays running to serve wallet requests). Previously, a user could run a command that would instantly strip the RPC password from a running daemon, leaving…

Authentication bypass via empty RPC passwordIn-flight weakening of daemon security settingsInconsistent security state across daemon restart
0dcef978by SomberNight+16−72 files
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Informational 21 AI analysisMessage 71 · Adequate
EL ElectrumElectrum BitcoinSoftware wallets

wizard: catch NotLegacySinglesigScriptType

This commit fixes a bug in Electrum's wallet setup wizard. Previously, if a user tried to import an individual private key for an unusual script type (like p2wsh), the wizard would crash with an internal error instead of showing a friendly…

Unhandled exception converted to user-facing errorImproves input validation and error handling in wallet import pathNo memory corruption, privilege escalation, or cryptographic weakness evident
543b73beby f321x+7−21 file
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Informational 15 AI analysisMessage 65 · Adequate
EL ElectrumElectrum BitcoinSoftware wallets

transaction: use dummy DER ECDSA sig from descriptor.py

This commit is a minor code cleanup. It replaces a locally-defined placeholder fake cryptographic signature with a shared constant from another file. The placeholder is only used to estimate transaction size and is never broadcast or used …

e9ac3e93by f321x+2−31 file
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